Respected sir/mam,

I wanted to let you know that the task you assigned to me has been completed. All of the required steps have been completed and the project is ready for review. Please let me know if you have any questions or if there is anything else I can do to assist.

Thank you for entrusting me with this task. I look forward to working with you on any future projects.

Sincerely, [Md Saif Ur Rahman]